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Review on ๐Ÿš— Enhance Your Vehicle's Performance with Flowmaster 53072 3 In(C)/Out(O) 70 Series Muffler Bbii by Ryan Calabro

Revainrating 4 out of 5

Annoying hum is good for mufflers

I bought a 70's 3" Flowmaster for my 2004 Suburban 5.3 4x4, it sounds great but annoying cockpit hum around 2krpm and on the highway 2k is mostly cruising rpm and it's annoying and tiring on long trips, I take it off and go back to the factory muffler.

Pros
  • There's something to that
Cons
  • Neutral